1.
Complete the sentences. Use the first conditional forms of the verbs.
 
1.If
you...............(clean) the window, I .............(hung) the
curtain.
2.Unless she..............(be)ill, we ...........(go) to
the swimming pool.
3.They...............(not/let you in) if you
............(come) late.
4.Providing he.............(propose)you,
what...............(you/do)?
5..............(tell) him to phone me
if you........(see)him.
6.The doctor...........(not/help) you if
you .............(not/tell) the truth.
7.If my best
friend...........(betray)me, I............(never/speak) to her
again.
8.Probably they .............(have) more time for me if
they..........(change) jobs.
9.I..............(give) you the money
unless you............(mention) them about that accident.
10.As
soon as Kate..........(pass) the exam, we.........(go) abroad.
11
If you (not go) away I'll send for the police.

12
I'll be very angry if he (make) any more mistakes.

13
If he (be) late we'll go without him.

14
She will be absolutely furious if she (hear) about this.

15
If you put on the kettle I (make) the tea.

16
If you give my dog a bone he (bury) it at once.

17
If we leave the car here it (not be) in anybody's way.

18
He'll be late for the train if he (not start) at once.

19
If you come late they (not let) you in.

20
If he (go) on telling lies nobody will believe a word he

says.